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An Experimental Study on the Long-Term Performance Variation of the Plate-Type Enthalpy Exchange Element Made of Paper

판형 종이 재질 전열교환 소자의 장기 성능 변화에 대한 실험적 연구

  • Received : 2016.01.27
  • Accepted : 2016.03.21
  • Published : 2016.04.10

Abstract

Long-term performance of the enthalpy exchange element is a topic of current interest due to the concern of possible performance degradation over time. In this study, a 350 CMH enthalpy recovery ventilator equipped with an enthalpy exchange element was installed in an office room, and the performance has been traced over the past 5 years. The appearance, overall dimension, thermal performance, leakage ratio and anti-bacterial performance were checked annually. Results showed that the change in thermal performance (sensible, latent and enthalpy efficiency) was negligible with periodic cleaning with an air gun. However, the leakage ratio increased with time, measuring 7.3% after 5 years. Anti-bacterial test revealed that no bacteria were found during the test period. The largest change in the dimension occurred at the middle location of the element, although the change was less than 2% of the initial value.

Keywords

Enthalpy exchange element;Paper;Enthalpy recovery ventilator;Long-term performance

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